Climate Overview
Phnom Penh has a tropical monsoon climate with two distinct seasons. From May to October, the southwest monsoon brings heavy rainfall, high humidity (often 80%+), and temperatures around 28–32°C (82–90°F). November to April is the dry season, with cooler temperatures (24–30°C/75–86°F) and significantly less rain. The absolute hottest months are March and April, when temperatures can exceed 35°C (95°F) and the air feels oppressive even without rainfall.
Best Time to Visit
November through February is ideal for visiting Phnom Penh. During these months, the weather is pleasant, humidity drops, and rainfall is minimal. December and January are particularly comfortable, with cooler evenings and sunny days perfect for exploring temples like Wat Phnom and the Royal Palace. Tourist prices peak during this window, with mid-range hotels averaging $40–80 per night compared to $20–40 in the rainy season.
Seasonal Breakdown
The dry season (November–April) suits most travelers, though February onward gets progressively hotter. May through July brings intense rain and occasional flooding in low-lying areas, but the city is lush and far less crowded—expect substantial discounts and fewer tourists at sites. August to October remains wet but slightly less intense, with occasional sunny stretches. Plan indoor activities like museums during rainy months, and pack lightweight, quick-dry clothing year-round.